Comparison

Japan vs 江戸ものさし

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Japan

Easily convert between Japanese and US units for length, weight, speed, volume, temperature, area, currency, and time zones. This tool is useful for travel, daily life, work, and study, offering a wide range of conversion categories.

Highlights
  • Length conversion
  • Weight conversion
  • Speed conversion
  • Volume conversion
  • Temperature conversion
  • Area conversion
  • Currency conversion
  • Timezone conversion
Features
Read full description

This is a handy tool for easy and convenient everyday unit conversions. It is equipped with features useful in various situations, from travel and daily life to work and study. With this app, you can convert units in the following categories: 1. Length (millimeters, centimeters, meters, kilometers ↔ inches, feet, yards, miles) 2. Weight (milligrams, grams, kilograms, tons ↔ ounces, pounds, stones, short tons) 3. Speed (meters/second, kilometers/hour ↔ feet/second, miles/hour) 4. Volume (cubic millimeters, cubic centimeters, cubic meters, liters ↔ cubic inches, cubic feet, fluid ounces, gallons) 5. Temperature (Celsius ↔ Fahrenheit) 6. Area (square millimeters, square centimeters, square meters, hectares ↔ square inches, square feet, acres) 7. Currency (dollars ↔ yen, using the latest exchange rate) 8. Timezone (Japan Standard Time ↔ Eastern Standard Time, Central Standard Time, Mountain Standard Time, Pacific Standard Time, Alaska Standard Time, Hawaii Standard Time) [Premium Version] - No ads within the app - Unlimited number of favorite registrations Terms of Use: https://jpusconvert-app.github.io/terms.html Privacy Policy: https://jpusconvert-app.github.io/privacy.html

About

江戸ものさし

Features
Read full description

時代劇を観ていて「1両って今のいくら?」と思ったことはありませんか?『江戸ものさし』は、江戸時代の通貨や度量衡(長さ・重さ・容積など)の単位を現代の数値に簡単換算できるアプリです。使い方はシンプルで、知りたい単位を選んで数値を入力するだけ。たとえば江戸の貨幣である「両・分・朱・文」を現在の日本円に換算したり、長さの単位「寸・尺・間・里」をメートルやキロメートルに直したりできます。1両が何円か、1尺が何センチかといった疑問がパッと解消! このアプリがあれば、江戸時代の金銭感覚や距離感をリアルに体感できます。時代劇や歴史小説の中の金額・距離の意味が直感的に理解できるので、物語の世界にもっと入り込めること間違いなし。難しい専門知識は不要です。「今と昔のものさし」を片手に、江戸の世界を覗いてみませんか?きっと歴史コンテンツが今まで以上に楽しくなりますよ!

Screenshots

Japan3 screens
江戸ものさし1 screens

Verdict

The call

The clearest difference is in-app purchases: 江戸ものさし at none against Japan's 1. Japan's advantage is update cadence (weekly vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Japan sells 1 one-off in-app purchase. 江戸ものさし asks for nothing beyond the download.

UpkeepUpdate frequency

Japan ships an update weekly, 江戸ものさし every 6 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
Japan versus 江戸ものさし: the parameters behind the verdict, then further details
ParameterJapan江戸ものさし
PriceFreeFree
Rating4.8 (20 ratings) — better—
Number of ratings20 — better—
Update frequencyWeekly — betterEvery 6 weeks
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.2 — better17.1
Further details — not scored
Size18 MB7 MB
Age rating4+4+
DeveloperKoya NamboYusuke Kiyoi

In-app purchases

1 purchases

Japan

One-time1
  • Premium$3.99
None

江戸ものさし

No in-app purchases

Questions

Is Japan free?
Japan is free to download, with in-app purchases available.
Is 江戸ものさし free?
江戸ものさし is free to download, with no in-app purchases.
Do Japan or 江戸ものさし have ads?
Both Japan and 江戸ものさし show ads.
Which is updated more often, Japan or 江戸ものさし?
Japan ships an update weekly, and 江戸ものさし every 6 weeks. Most recently, Japan was updated on November 4, 2026 and 江戸ものさし on October 30, 2026.

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